初中外研版 (新标准)Unit 3 Language in use.一等奖ppt课件

这是一份初中外研版 (新标准)Unit 3 Language in use.一等奖ppt课件，共47页。PPT课件主要包含了课堂导入，worried，whenever，sticks ，smooth ，tent ，gun，sudden ，stones ，课堂小结等内容，欢迎下载使用。

Must we bey the traffic rules?
Let’s talk！
Must we bey the schl rules?
What d yu think f their behavirs?
What d yu think f his behavir?
Language practice
1. Yu must be careful f falling stnes.2. Yu mustn’t walk t clse t the edge f the hill path because yu might fall and hurt yurselves.3. Yu shuld always wear prper clthes.4. Bears might think ur rubbish is fd.5. —Can we g rck climbing? —N, yu can’t.
情态动词本身有一定的意义，但不能独立作谓语，只能与其后的动词原形一起构成谓语，表示说话人的情绪、态度或语气，用来表达建议、请求、可能或意愿等。情态动词没有人称和数的变化，情态动词后必须跟动词原形。常见的情态动词有：can, culd, may, might, must, need, shall, will, shuld, wuld。
Can yu lift this heavy bx? (体力) Mary can speak three languages. (知识) Can yu skate? (技能)
此时可用be able t代替。can只有一般 现在时和一般过去式; 而be able t 则有 更多的时态。
①表示能力(体力, 知识, 技能), 常用情态 动词can和culd表达。
如：I’ll nt be able t cme this afternn. (一般将来时) He was able t g t the party yesterday evening in spite f the heavy rain.
当表示“经过努力才得以做成功某事”时用be able t, 不能用can。如：
—Can I g nw? —Yes, yu can. / N, yu can’t. —Culd I cme t see yu tmrrw? —Yes, yu can. (N, I’m afraid nt.)
此时可与may互换。在疑问句中还可用culd, might代替，但culd, might并不表示过去式，只是语气更委婉。它们不能用于肯定句和答语中。如：
②表示请求和允许。如：
They’ve changed the timetable, s we can g by bus instead. This hall can hld 500 peple at least.
③表示客观可能性(客观原因形成的能力)。如：
Can this be true? This can’t be dne by him. Hw can this be true?
④表示推测 (惊讶、怀疑、不相信的态度) ，用于疑问句、否定句和感叹句中。
—Might / May I smke in this rm? —N, yu mustn’t.—May / Might I take this bk ut f the rm? —Yes, yu can. (N, yu can’t /mustn’t. )
用May I ...？征徇对方许可时比较正式和客气，而用Can I ...？在口语中更常见。
①表示请求和允许。might比may语气更委婉，而不是过去式。否定回答时可用can’t 或mustn’t，表示“不可以，禁止”。如：
May yu succeed! He may / might be very busy nw. Yur mther may / might nt knw the truth.
②用于祈使句，表示祝愿。如：
③表示推测、可能性 (不用于疑问句)。 might不是过去式，它所表示的可能性比may小。如：
Yu must cme in time. —Must we hand in ur exercise bks tday? —Yes, yu must. —N, yu dn’t have t / yu needn’t.
must, have t
在回答引出的问句时, 如果是否定的，不能用mustn’t (禁止, 不准)，而用needn’t, dn’t have t (不必)。
①表示命令、禁止、不得不。如：
His play isn’t interesting, I really must g nw. I had t wrk when I was yur age.
Yu’re Tm’s gd friend, s yu must knw what he likes best.Yur mther must be waiting fr yu nw.
②must是说话人的主观看法，而have t则强调客观需要。must只有一般现在时，have t 有更多的时态形式。如：
③表示推测、可能性（只用于肯定的陈述句)。如：
Yu shall fail if yu dn’t wrk hard. (警告) He shall have the bk when I finish it. (允诺) He shall be punished. (威胁)
shall, shuld
②shall 用于第二、三人称，表示说话人给对方的命令、警告、允诺或威胁。
① shall 用于第一人称，征求对方的意见。如：
What shall we d this evening?
Will / Wuld yu pass me the ball, please? I will never d that again. They asked him if he wuld g abrad.
②表示意志、愿望和决心。如：
①表示请求、建议等，wuld更委婉。如:
Durin the vacatin, he wuld visit me every ther day. The wund wuld nt heal. It wuld be abut ten ’clck when she left hme.
③wuld表示过去反复发生的动作或某种倾向。wuld表示过去习惯时比used t 正式，且没有“现已无此习惯”的含义。如：
④表示估计和猜想。如：
I shuld help her because she is in truble. Yu ught t take care f the baby.
Yu shuld / ught t g t class right away.Shuld I pen the windw?
shuld, ught t
①shuld, ught t表示“应该”，ught t表示义务或责任，比shuld语气重。
②表示劝告、建议和命令。shuld, ught t可通用，但在疑问句中常用shuld。
③表示推测 shuld/ ught t 客观推测 must 主观推测
He must be hme by nw. (断定他已到家) He ught t/shuld be hme by nw. (不太肯定) This is where the il must be. (直爽) This is where the il ught t/shuld be. (含蓄)
1. N smking.2. N eating r drinking.3. Children crssing.4. Danger! Be careful f falling rcs.5. Children shuld be taken care f by parents.6. D nt drink and drive.
Match the signs with the rules and warnings.
1. N smking.2. N eating r drinking.3. Children crssing.4. Danger! Be careful f falling rcks.5. Children shuld be taken care f by parents.6. D nt drink and drive.
Lndn Indr Climbing CentreVisitrs please nte:DsCheck in at the main gate when yu cme t the center.Climb with smene.Wear a hard hat at all times.Wear the crrect climbing shes.Wear cmfrtable clthes.
Read the lists f rules and write sentences using must, mustn't, shuld r shuldn't.
Dn’tsDn’t climb withut a rpe.Dn’t eat r drink anywhere except in the restaurant.Dn’t listen t persnal music players while climbing.Dn’t talk n a mbile phne while climbing.
Answers:Yu must check in at the main gate when yu cme t the center.Yu must climb with smene.Yu must wear a hard hat at all times. Yu must wear the crrect climbing shes. Yu shuld wear cmfrtable clthes.
Yu mustn’t climb withut a rpe.Yu mustn’t eat r drink anywhere except in the restaurant.Yu shuldn’t listen t persnal music players while climbing.Yu mustn’t talk n a mbile phne while climbing.
1. Why must yu climb with smene?2. Why must yu wear cmfrtable clthes?3. Why mustn’t yu climb withut a rpe?4. Why shuldn’t yu listen t music while climbing?
—Why must yu check in when yu cme t the centre?—Because they want t knw wh is there.
Wrk in pairs. Explain why the rules in Activity 2 are imprtant
Peple are very (1) _______ abut the cnditins f the ancient frests f Canada and want t save them. Many visitrs t the frests use knives t cut their names int the trees, sme f which are hundreds f years ld.
althugh keep stream turist wrry
Cmplete the passage with the crrect frm f the wrds in the bx.
(2) ________ there are litter bins, peple still thrw rubbish int the (3) ______ and this causes plants and fish t die. Peple frm lcal villages have helped clean up the frests. We hpe (4) _______ will play their part in (5) _______ Canada’s frests clean t!
1. Yu shuld _______________________.2. Yu shuldn’t _____________________.3. Yu must _________________________.4. Yu mustn’t ______________________.
Nw write pssible rules fr visitrs t the frests
1. Cme and visit me _________ yu have time.2. The wall is made f ______.3. The path t the tp is nt very _______.4. Remember t take a ____ with yu t sleep in, because it might rain.
Cmplete the sentences with the wrds in the bx
gun smth sticks stne sudden tent whenever
5. He lifted up the _____ and pinted it at the bear.6. There was a ______ nise in the wds and we all stpped mving.7. Birds use small ______ and leaves t make a hme.
1. Is Zhang Wenpeng’s schl a green ne? Yes, it is.2. What shuld we d when we leave a rm? We shuld turn ff the light.
Listen t Part 6 and answer the questins
1. What des Zhang Wenpeng try say with his drawing? Peple must wake up t the fact that pllutin is causing damage t the prgress we’ve made.2. What des Zhu Zhiyun try t say with his painting? Peple must nt waste electricity.
Read the passage and answer the questins.
3. What des the schl suggest the students shuld d? The students shuld pass n what they have learnt in schl t their parents and neighburs.4. Hw can a schl becme a “green schl”? A schl must include educatin abut the envirnment as part f the timetable.
1. The first thing yu have t d is t ______________ carefully.2. Think abut where ____________________ and whether there are ___________________.3. Yu shuld nly take marked ________.
plan the wrk
yu are ging t wrk
clearly marked paths
Listen and cmplete the sentences.
4. Make sure yu knw where ___________ fr lunch.5. Dn’t frget t tell peple t _________ fr the picnic.6. Dn’t walk when it is ________ r in _________________.7. Yu must nt try ut a ___________ with a grup.
very bad weather
visiting smene’s hme eating and drinking travelling n public transprt behaving plitely in public visiting turist sights
Wrk in pairs. Discuss and give advice fr visitrs t China. Talk abut:
Writing advice fr visitrs t China
Yu must …Yu mustn’t …Yu shuld …Yu shuldn’t …
Write yur advice.
Wrk in grups and cmpare yur advice. Chse the five mst useful pieces f advice fr visitrs t China.
1.We have revised mdel verbs.
1. —Must I hand in my hmewrk nw, Mr. Smith? —N, yu _______. A. can’t B. shuldn’t C. wuldn’t D. needn’t
2. —Excuse me, may I keep the bk a little lnger? —Srry. Yu ________ return it tday. A. must B. mustn’t C. can D. can’t
3. —Is the man ver there Mr. Brwn? —It ____ him. He has gne t Brazil. A. may nt B. can’t be C. shuldn’t D. mustn’t 4. Children ____ sit in the frnt seat f a car. It’s t dangerus. A. need B. needn’t C. must D. mustn’t
5. —Must I water the flwers nw, mum? —N, yu ____. Yu ____ d it later. A. mustn’t; must B. mustn’t; may C. needn’t; may D. needn’t; must
6. —____ I knw by what time yu want the prject t be dne? —By the day after tmrrw. ____ yu finish it n time A. May; Can B. Must; Need C. Culd; Must D. Need; Wuld
7. —Wh’s singing in the garden? —It _____ be Mr. Brwn. He always practices singing at this time. A. must B. can’t C. need8. I _____ fllw yu. Wuld yu please repeat it? A. can’t B. mustn’t C. needn’t D. shuldn’t
制作一个海报，宣传环保学校的做法。